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Note 1 - Basis of Presentation (Tables)
 3 Months Ended
Mar. 31, 2018
Notes Tables  
Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block]
   
Three Months Ended
    
Twelve Months Ended
  
(
in thousands)
  
Dec
.
31, 2017
    
Sept
.
30 2017
    
June 30, 2017
    
Mar
. 31, 2017
    
Dec. 31, 2017
  
R
evenue
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
Services
   $
166
     $
162
     $
159
     $
149
     $
636
  
Products
    
(166
 )    
(162
 )    
(159
 )    
(149
 )    
(636
 )
Total net revenue
    
−
      
−
      
−
      
−
      
−
  
Cost of Revenue
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
Services
    
62
      
51
      
50
      
46
      
209
  
Products
    
(62
 )    
(51
 )    
(50
 )    
(46
 )    
(209
 )
Total cost of revenue
    
−
      
−
      
−
      
−
      
−
  
Net Income
   $
−
     $
−
     $
−
     $
−
     $
−